How does it measure the apex offset, radius of curvature, and fiber height of a connector?
The measurement of apex offset, radius of curvature, and fiber height of a connector by an interferometer relies on analyzing the precise optical interference patterns generated when light reflects from the fiber end-face and a reference surface. These patterns encode information about the surface topography.
However, the detailed optical principles, specific algorithms, and internal workings of how an interferometer processes these interference patterns to precisely calculate each of these parameters (apex offset, radius of curvature, and fiber height) are a specialized aspect of optical metrology and equipment design.
As a DCYS/OFSCN senior fiber optic sensing application engineer, my expertise focuses on the application and technical parameters of OFSCN® Fiber Bragg Grating sensors, interrogators, and special optical fibers. Therefore, I am unable to provide a comprehensive explanation of the exact measurement methodology used by a general interferometer to derive these specific values.
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